IPv6: use ipv6_addr_v4mapped()

Change udp6_portaddr_hash() to use ipv6_addr_v4mapped()
inline instead of ipv6_addr_type().
Signed-off-by: NBrian Haley <brian.haley@hp.com>
Acked-by: NEric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/ipv6/udp.c

@@ -89,7 +89,7 @@ static unsigned int udp6_portaddr_hash(struct net *net,
 
 	if (ipv6_addr_any(addr6))
 		hash = jhash_1word(0, mix);
-	else if (ipv6_addr_type(addr6) == IPV6_ADDR_MAPPED)
+	else if (ipv6_addr_v4mapped(addr6))
 		hash = jhash_1word(addr6->s6_addr32[3], mix);
 	else
 		hash = jhash2(addr6->s6_addr32, 4, mix);